Start with Flower Shop Network’s Caring For Lucky Bamboo Page - we have complied a lot of information about lucky bamboo into one page. You can also go to chiff.com lucky bamboo.

The lucky bamboo that has a spiral shape was create by manipulating the lucky bamboo exposure to light. Because lucky bamboo is slow growing this a long and some say arduous task. But nothing worth having comes easy and half the fun is the adventure you take to get there. With that said, here is how you create lucky bamboo curls:

Find a cardboard box big enough to fit over the lucky bamboo with a little room. Cut the bottom and one side of the box off. Place the cardboard box over the lucky bamboo this will create shade on the top and three sides of the lucky bamboo. Face the open side of the box towards your light source. The lucky bamboo will begin to grow towards the light creating a bend. When you notice a definite bend rotate the container about an inch - the lucky bamboo will begin to grow towards the light again creating a new bend. Continue this process until you achieve the curl you want.

If you are re-rooting a lucky bamboo stalk, I would let it form new roots before attempting the curling process. Good luck and let me know how it goes.